using System.Collections.Generic;

namespace NDaisy.Core
{
    /// <summary>
    ///     Provides a singleton dictionary for a certain key and vlaue type.
    /// </summary>
    /// <typeparam name="TKey">The type of key.</typeparam>
    /// <typeparam name="TValue">The type of value.</typeparam>
    public class SingletonDictionary<TKey, TValue> : Singleton<IDictionary<TKey, TValue>>
    {
        static SingletonDictionary()
        {
            Singleton<Dictionary<TKey, TValue>>.Instance = new Dictionary<TKey, TValue>();
        }

        /// <summary>
        ///     The singleton instance for the specified type T. Only one instance (at the time) of this dictionary for each
        ///     type of T.
        /// </summary>
        public new static IDictionary<TKey, TValue> Instance
        {
            get { return Singleton<Dictionary<TKey, TValue>>.Instance; }
        }
    }
}